Sharpen your mental agility and put your vision to the test with this adorable koala puzzle. If you reckon you've got 20/20 vision - but your partner thinks you need a trip to Specsavers - here's the ...

These koalas may seem cute, but they're hiding a bunny rabbit that you need to track down in 15 seconds or less to prove to your partner that you don't need a trip to Specsavers... Prove you have ...